The real problem isn't skips when listening to music. The problem is skips when *recording* music.
When doing multitrack recording you can be mixing several existing tracks, applying effects to them, playing the result (also with effects) and recording several new tracks (also with effects!). That can put a very high load on the system. Then, if you get audio skips when recording the 1 time in 20 you're able to play the perfect guitar solo, the recording is screwed.